package com.zxy.condition;

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.context.annotation.Conditional;
import org.springframework.core.env.Environment;
import org.springframework.core.type.AnnotatedTypeMetadata;

import java.lang.annotation.Annotation;

//判断是否Windows系统
public class WindowsCondition implements Condition {

    /**
     * @param context  判断条件能使用的上下文（环境）
     * @param metadata 注解信息
     * @return
     */
    @Override
    public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
        //1.能获取到ioc使用的beanfactory
        ConfigurableListableBeanFactory beanFactory = context.getBeanFactory();
        //获取类加载器
        ClassLoader classLoader = context.getClassLoader();

        //获取到bean定义的注册类
        BeanDefinitionRegistry registry = context.getRegistry();
        //可以判断容器中的bean注册情况
        boolean person = registry.containsBeanDefinition("person");
        //获取当前环境信息
        Environment environment = context.getEnvironment();
        String property = environment.getProperty("os.name");


        if (property.contains("Windows")) {
            return true;
        }
        return false;
    }
}
